1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>EPUB.js Spreads Example</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.5/jszip.min.js"></script>
<script src="../dist/epub.js"></script>
<link rel="stylesheet" type="text/css" href="examples.css">
</head>
<body>
<div id="title"></div>
<div id="viewer" class="spreads"></div>
<a id="prev" href="#prev" class="arrow">‹</a>
<a id="next" href="#next" class="arrow">›</a>
<div id="controls">
<input id="current-percent" size="3" value="0" /> %
</div>
<script>
var controls = document.getElementById("controls");
var currentPage = document.getElementById("current-percent");
var slider = document.createElement("input");
var slide = function(){
var cfi = book.locations.cfiFromPercentage(slider.value / 100);
rendition.display(cfi);
};
var mouseDown = false;
// Load the opf
var book = ePub("https://s3.amazonaws.com/moby-dick/moby-dick.epub");
var rendition = book.renderTo("viewer", {
width: "100%",
height: 600
});
var displayed = rendition.display();
var title = document.getElementById("title");
var next = document.getElementById("next");
next.addEventListener("click", function(e){
rendition.next();
e.preventDefault();
}, false);
var prev = document.getElementById("prev");
prev.addEventListener("click", function(e){
rendition.prev();
e.preventDefault();
}, false);
var keyListener = function(e){
// Left Key
if ((e.keyCode || e.which) == 37) {
rendition.prev();
}
// Right Key
if ((e.keyCode || e.which) == 39) {
rendition.next();
}
};
rendition.on("keyup", keyListener);
document.addEventListener("keyup", keyListener, false);
book.ready.then(function(){
// Load in stored locations from json or local storage
var key = book.key()+'-locations';
var stored = localStorage.getItem(key);
if (stored) {
return book.locations.load(stored);
} else {
// Or generate the locations on the fly
// Can pass an option number of chars to break sections by
// default is 150 chars
return book.locations.generate(1600);
}
})
.then(function(locations){
controls.style.display = "block";
slider.setAttribute("type", "range");
slider.setAttribute("min", 0);
slider.setAttribute("max", 100);
// slider.setAttribute("max", book.locations.total+1);
slider.setAttribute("step", 1);
slider.setAttribute("value", 0);
slider.addEventListener("change", slide, false);
slider.addEventListener("mousedown", function(){
mouseDown = true;
}, false);
slider.addEventListener("mouseup", function(){
mouseDown = false;
}, false);
// Wait for book to be rendered to get current page
displayed.then(function(){
// Get the current CFI
var currentLocation = rendition.currentLocation();
// Get the Percentage (or location) from that CFI
var currentPage = book.locations.percentageFromCfi(currentLocation.start.cfi);
slider.value = currentPage;
currentPage.value = currentPage;
});
controls.appendChild(slider);
currentPage.addEventListener("change", function(){
var cfi = book.locations.cfiFromPercentage(currentPage.value/100);
rendition.display(cfi);
}, false);
// Listen for location changed event, get percentage from CFI
rendition.on('relocated', function(location){
var percent = book.locations.percentageFromCfi(location.start.cfi);
var percentage = Math.floor(percent * 100);
if(!mouseDown) {
slider.value = percentage;
}
currentPage.value = percentage;
console.log(location);
});
// Save out the generated locations to JSON
localStorage.setItem(book.key()+'-locations', book.locations.save());
});
</script>
</body>
</html>
|
